PHP-2376 - PHP allow_url_fopen

(PHP)

This information is provided as part of the Lynis community project. It is related to Lynis control PHP-2376 and should be considered as-is and without guarantees. Any advice and commands should be tested before implementing them in production environments.

Description

PHP allows file downloads with the allow_url_fopen setting. If not strictly needed for the applications running on the server, make sure this option is disabled.

How to solve

Most PHP applications don't need remote file downloads. Check your PHP code for any file open requests (fopen), which reference an URL (e.g. http://). If there are none, disable this function.

Additional resources

Need more details?

Consider an upgrade to Lynis Enterprise to receive more guidance. The Enterprise version helps to you with daily health checks of your environment, learn in-depth system hardening, and resources to protect your systems better.

See demo

About

Lynis is a technical security auditing tool for Unix flavors like Linux, macOS, AIX, Solaris, and *BSD. It is open source software and free to use. Typical usage include system hardening, compliance testing, and vulnerability scanning. The project has an active community, including development via GitHub.

Lynis Enterprise

Do you need to collect data from multiple systems or compliance reporting? Lynis Enterprise uses Lynis to collect the data and make your work easier.

Benefits: automate security audits, detailed reporting, compliance testing.

  • Centralized management
  • Improvement plan with priorities
  • Reporting
  • Dashboards
  • Predefined policies
  • Integration (API)
  • Improvement snippets for tools like Ansible, Chef, Cfengine, Puppet, and SaltStack
Take the Tour